Electric screw-driving guide



Oct. 4,1927.

E. G. MORGAN ELECTRIC SCREW DRIVING GUIDE Filed Sept. 5, 1924 INVENToR. row//v G/ORGA/v. BY

W ..Lffluf ATTORNEY.

Patented Det. 4, 1927.'

UNITED rSTATES vPATIENT "OFFICE-.iv

EDWIN G. MORGAN, 0F FLUSHING, NEW YORK.

' ELECTRIC SCREW-DRIVING GUIDE.

Application led September' 3, 1924. Serial No. 735,676.

This invention relates to a screw driving guide and more particularly to a novel and improved device particularly adapted for use in connection with electric drivers where- 5 by accurate work may be facilitated.

One of the objects of my invention is to provide an auxiliary guide to be used in connect-ion with any conventional type of electric screw driving .tools or machines 1G whereby the screws may be accurately driven through the work to the proper depth without particular attention on the part of the operator.

In the construction of hydroplane bodies particularly where the screws must be driven through the work at uniform depth and in close proximity to each other, it has been heretofore very difficult to regulate the electric driving 4tool with the result that some of the screws are not properly driven, very often break, and the work is a slow and tedious operation. My attachment or auxiliary device is particularly adapted for this character of work in that the screwdriving operation is rendered absolutely accurate, the depth or distance through which the screw driver operates may be regulated for different lengths of screws and otherwise permits the work to be speeded up.

purposes and nature of my invention reference is had to the accompanying drawings showing a preferred embodiment thereof and which, taken in connection with the specification, fully sets forth the construction in which,

Figure 1 is a view partly in sect-ion showing the relation of the guide to the screw driver and chuck.

Figure 2 is a vertical, sectional view through the-guide showing 'the screw about to be driven into the work.

Figure 3 is a plan of the said guide.

Figure 4l is a bottom view thereof.

Referring now to the drawings wherein like reference characters designate corresponding parts throughout the several views, 5 designates the chuck of the electric drill and 6 'the screw driver, the operating end 7 of said driver being bevelled so as to engage In order to more fully understand the the head of the screw 8 in the reamed screw hole of. the'piece of work designated in its entirety by numeral 9. My invention proper consists of a sleeve 10 which is preferably case hardened, said sleeve being threaded at its upper end 11 on which I have provided an adjusting collar 12 and lock nut 13, whereby the distance of the downward movement of the chuck may be regulated. The lower end of the sleeve is externally threaded as indicated at 14 and is also provided with an internally threaded adjustable collar 15. T he collar 15 is formed with an annular, circumferential groove in which I have positioned a resilient ring preferably of rubber and which is adapted. to engage the work. When the screw driver is operated and engages the nut 13, the ring 16 will absorb the shock or action of the screw driver which, of

course, is thus limited, or in other words,

regulates the depth to which the screw is driven. The ring 16 also has the tendenci7 to maintain the guide 10 in its proper position while the driving operation is being 'performed and also prevents the work from being marred as the result of too great a driving power being exerted.

When the driver 6 is inserted through the sleeve, the

bevelled point of the said driver will readily engage the slot at the head of the screw and a perfectly vertical, horizontal and straight driving operation is effected, thus' preventing the screw from being driven through the work at an angle, preventing the splitting of the work.

In actual practice,

the screws are generally lubricated as by dipping in oil or soap so that they may more easily penetrate the har-d wood and in order to permit the lubricant to flow out of the sleeve 10, a transverse aperture 10a is provided, which aperture is in communication with a vertical aperture 15' of thercollar 15. The regularity, precision and accuracy with which the screws may be driven as well as the rapidity will prove the device highly useful for various kinds of work.

Having thus described my invention, what I clairnas new and desire to secure by United .States Letters Patentis guide screw driving taaie geinprie'ihg a cylindrical, hollow sleeve, said sleeve being externally threaded, at its top and bottom, a pluralityof adjusting nuts on the upper end of the threaded portion and an adjusting nut on the lower threaded portion of the sleeve, the lower of said adjusting nuts havingv anr annular groove therein, and a rubber ring within 'the said groove ertending slightly below the surface of the said nut to absorb the shock when the top of the sleeve is en- 10 gaged by the tool.

In testimony whereof I affix my signature.

EDWIN G'. 'MORGAN [ns] 

